A young man subjected to a brutal stabbing had been arrested earlier this year with €10,000 worth of cannabis.
Gardai are investigating whether a notorious Tallaght drugs gang was responsible for the attack, which left the man with serious injuries to his chest and shoulders.
The victim, aged in his 20s, was jogging in the Blacklion area of Greystones, Co Wicklow, at around 9.30pm on Tuesday when he was set upon by a number of men in balaclavas.
He suffered serious but non- life-threatening injuries and was rushed to St Vincent's Hospital.
While the victim refused to make a statement, it is understood officers are probing whether he was targeted because of a drug debt.
The Eastern European victim was busted by local gardai allegedly in possession of around €10,000 worth of cannabis earlier this summer.
"There may well be a link between the drugs seizure and the vicious assault," a senior source said last night.
There have been no arrests in the case, which is being investigated by Greystones gardai.
There have also been no arrests over an unrelated incident in which 19-year-old man was attacked on St Agnes Road, Crumlin, at 7.30pm on Monday, close to the local garda station.
The victim, from nearby Sperrin Road, Drimnagh, has also refused to make a complaint but this has not prevented gardai from fully investigating the case.
As part of their probe, officers have seized one of three cars allegedly used in the attack, during which the teen was stabbed and beaten with golf clubs. The young man suffered superficial stab wounds to his right arm and right leg and was left heavily bruised.
Three cars arrived at the scene, before a group of males got out and launched a violent attack on the victim.
A source said weapons including knives, golf clubs and bats were used in what has been described as a "targeted attack".
Between eight and 10 young men are believed to have been involved in the incident. Gardai are confident of pressing charges in the case.
"Gardai seized a car shortly after the attack. This vehicle had been stopped earlier in the day in the locality so officers know who was in it," a source said.
"There is good CCTV in the area and gardai are hopeful that violent disorder charges can be brought against the suspects."
The teenage victim has since been discharged from St James's Hospital.